The force of gravity on a 2kg rock is twice as great as that on a 1kg rock. which one will fall faster. why?

Question

The force of gravity on a 2kg rock is twice as great as that on a 1kg rock. which one will fall faster. why?

Answer 1

They will fall at the same time. Since the acceleration throughout the motion is constant-that is 9.8 m/s^2.  

Answer 2

Without considering air friction, both will fall at the same time.

Taking air friction into consideration, it depends on the shape and radius of the rock.

Answer 3

niether one / the same time,because there the same as (1)  

Answer 4

In the absense of air friction both rocks will fall at the same rate.  Approximately 9.8 m/s^2

Answer 5

The acceleration due to gravity does not contain any factor for mass. It is 9.8m/(sec^2). Mass does play a role when you try to stop the falling object. Those two rocks you describe, when dropped from a given height, will impart a different force on the ground upon impact, twice as much for the 2kg rock. So, when dropped from the same height, each rock will accelerate at the same rate, and have the same speed upon reaching the ground, but the 2kg rock will hit the ground with twice the force as the 1kg rock. End of story.